201239934 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種旋叙開關 ’特別是指一種讓旋紐 .可迅速便利達到切換段位效果之旋鈕停止機 【先前技術】 參閱圖！，習知的旋紐開關10主要具有一底座u、數 個接設在底座11下方處的接腳端子裝設在底座u 内部的電路板（圖未示）、-可旋轉地轴設在底座u内的旋 紐13、以及一蓋設在底座11上方處的上蓋14，接腳端子 12與内部電路板作電聯接觸，上蓋14開設有—供旋紐Η 套入的圓孔141，上蓋14表面對應旋紐13外圍處設有數個 刻度數字U2，如此使时_旋# 13到達預定段位處， 旋紐U下端可控制電路板與接腳端子12接觸在不同迴路 位置，藉此旋鈕開關10即可達到切換不同段位的效果。 上述旋鈕開關10雖然可以達到切換段位的使用效果， ^而在使用上仍有其缺失存在，f知旋紐開關10的旋紐U 是呈圓轴狀，相對該上蓋14設置圓孔141供旋鈕伸入 套合，該旋紐U在圓孔141内可作36〇度自由旋轉，並盈 任何阻擒物限制⑽13的轉動’如此使用者在切換段位時 ，由於各刻度數字142之間的間隔距離小，使用者在撥轉 凝紐13時，很谷易就撥轉過頭，造成内部電路板迴路接通 不良’因此切換段位的使用動作並不十分便利。 【發明内容】 因此’本發明目的在提供一種限制旋鈕在一角度範圍 3 201239934 内迅速達到切換段位效果的旋鈕停止機構。 於是，本發明提供一種旋鈕停止機構，其包含有—底 座單元I-電路板單元、—旋料元及—上蓋單元，其中 •底座單it具有-底座、以及多數個裝設在底座内部的接 腳端子；電路板單元具有—裝設在底座内部的電路板，該 2路板底面與接腳端子接觸形成電聯；旋鈕單元具有—軸 。又在底座内部的旋钮’該旋紐下端貞電路板廢合接觸，旋 ，上端伸設有n凸軸外周—側邊處設有—第一卡合 :’上蓋單元具有一蓋設在底座頂面處的上蓋，該上蓋開 °又有供凸軸穿出的圓孔，上蓋在圓孔内周壁上設有一可 對第一卡合部形成擋抵的第二卡合部。 本發明之功效是旋鈕設有第一卡合部，使旋鈕在撥轉 時可與上蓋的第二卡合部形成擋止，藉此防止旋鈕過度撥 轉’使旋紐在有限範@内可迅速㈣切換段位的效果。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配σ參考®式之—較佳實施例的詳細說明巾將可清 楚的呈現。 參閱圖2至圖4 ’本發明旋紐停止機構在—較佳實施例 中’主要包含有—底座單以G、-電路板單m -旋紐 單元40及-上蓋單元50’接著，再將上述各單元的組成構 件及空間組合型態詳述於后。 底座單το 20具有—底座21、以及多數個裝設在底座 21内部的接腳端子22,該底座21是呈矩形狀的中空座體 201239934 其内部底處可供接腳端子22向下穿伸出。 内部的電路板31 該電路板31在預 3 11各別與接腳端 電路板單元3G具有-裝設在底座21 、以及一蓋壓在電路板31上的壓板32， 疋位置處設有多數個接點311，該等接點 子22接觸形成電性連接。 ::上的彈性定位…旋…二= 川’凸轴川頂端面處設有一指示箭頭412，凸轴4ιι: ^在一側邊處設有-第卡合部413,在本實施例中，第一 =合部413是—種凸緣結構，該旋紐^下端處具有—圓盤 ’該圓盤“4底端面與壓板32接觸，轉動旋鈕41可令 電路板與接腳端子22以預定迴路形成電聯，此種迴: 控制方式已是習知’在此便不再多加贅述。圓# 414靠近 凸軸川外周處凹設有-槽部415，該槽部415可供〇形環 42套入組裝，圓& 414外周環列間隔設置有多數個凹部 ό彈佳定位片43略呈圓形狀，其兩側邊處各弯折設有 :凸Τ 431，該凸部431剛好可卡入旋叙4ι的凹部416内 形成彈抵定位，藉此該旋鈕41可逐段地進行撥轉移動。 上蓋單元50具有一蓋設在底座21頂面處的上蓋5卜 該上蓋51外周處設有數片牆部511，該等牆部5ιι剛好可 套合嵌入底座21内壁，上蓋51頂面中央處開設有一供凸 軸4η穿出的圓孔512，上蓋51在圓孔512内周壁一側邊 處設有一可對第一卡合部413形成擋抵的第二卡合部513， 201239934 在本實％例中，第二卡合部513 I具有預定角度範圍的扇 形槽結構’使第一卡合部413可在第二卡合部513的空間 内自由移動，當然，業者也可將第一、第二卡合部413、 513的形狀結構互換，同樣可達到撐止定位的效果，上蓋 51對應旋鈕41外圍處設有數個刻度數字514，旋鈕41的 指示箭頭412可指到刻度數字514，藉此達到顯示目前段位 的指示效果。 乂上即為本發明旋紐停止機構各構件形狀的概述丨接 著，再將本發明的切換動作以及預期所能達成之功效陳述 如后： >閱圖5、圖6，g使用者要對本發明進行切換段位的 動作時，只要以手部撥轉該旋鈕41上的指示箭頭412，該 旋鈕41就可被轉動至預定段位處，當使用者過於用力旋轉 該旋鈕41時，旋鈕41上的第一卡合部413會受到上蓋51 的第二卡合部513擋抵而形成限位，使該旋鈕41不會旋轉 超出可轉動的角度範圍，如此該旋鈕41便可在〇〜4各段位 之間迅速作切換。 重要的是，使用需求上，如果需要增加為〇〜6的段位 ，或減少成0〜3的段位，僅需更換上蓋51採用對應性之第 二卡合部513即可達成，而不需改變旋鈕單元4〇之結構； 即僅需製備結構較簡易之上蓋51 ’而無需製備結構較複雜 之旋鈕單元40,相對具有高實用性與低製造成本的優點。 综上所述，本發明旋鈕停止機構主要是為了解決習知 旋鈕開關10的使用問題，其採用的技術手段是利用在旋鈕 201239934 41外周處設有-第-卡合部413，在上蓋5i圓孔5i2 一側 邊内壁處設有-第二卡合部513，在旋紐41正常切換段位 的情形下，第—卡合部413可在第二卡合部5i3的角度範 圍内自由移動，當使用者撥轉旋鈕41過頭時，第一卡合部 413會抵到第二卡合部513内壁而形成擋止限位，如此該旋 鈕4丨便不會有切換過頭的情形發生，旋鈕41在各段位之 間可迅速地進行切換，具有快速便利的使用效果。 惟以上所述者，僅為本發明之一較佳實施例而已，當 不能以此限定本發明實施之範圍，即大凡依本發明申請專 利範圍及發明說明内容所作之簡單的等效變化與修飾，皆 仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是習知旋鈕開關的組合立體圖； 圖2是本發明旋鈕停止機構一較佳實施例的分解立體 圖’說明本發明包含有—底座單元、-電路板單元、一旋 鈕單元及一上蓋單元； 圖3是上述較佳實施例的組合立體圖； 圖4是上述較佳實施例的褕視圖，說明旋鈕單元外周 處設有一第一卡合部，上蓋單元設有一可對第一卡合部擋 止限位的第二卡合部； 圖5是上述較佳實施例的動作圖，說明旋鈕 至第。段位的情形;及 早70撥轉 圖6是上述較佳實施例的動作圖，說明旋鈕單元撥轉 至第4段位的情形q 201239934 【主要元件符號說明】 20··.·. •…底座單元 414… •…圓盤 21 •…底座 415… …·槽部 22·.··· •…接腳端子 416… •…凹部 30·..·· …·電路板單元 42…… •…0形環 31·.··. •…電路板 43…… •…彈性定位片 311… ··..接點 431 ··· …·凸部 32*···. …·壓板 50…… •…上盖單元 40 •…旋鈕單元 51…… •…上蓋 41···.. •…旋紐 511… •…牆部 411… ----凸轴 512 ... •…圓孔 412… •…指不箭頭 513… •…第二卡合部 413… —第 卡合部 514… •…刻度數字201239934 VI. Description of the Invention: [Technical Field] The present invention relates to a revolving switch ‘in particular to a knob that can quickly and conveniently achieve the effect of switching the segment position. [Prior Art] Refer to the figure! The conventional rotary switch 10 mainly has a base u, a plurality of circuit boards connected to the bottom of the base 11 and a circuit board (not shown) mounted inside the base u, and a rotatably shaft is disposed on the base u. The inner button 13 and the upper cover 14 are disposed above the base 11. The pin terminal 12 is in electrical contact with the inner circuit board. The upper cover 14 is provided with a circular hole 141 for the knob, and the upper cover 14 The surface corresponding to the knob 13 is provided with a plurality of scale numbers U2, so that the time_13 is reached at a predetermined position, and the lower end of the knob U can control the circuit board to contact the pin terminal 12 at different loop positions, thereby the knob switch 10 You can achieve the effect of switching between different segments. Although the above-mentioned knob switch 10 can achieve the use effect of the switching segment position, and there is still a defect in use, the knob U of the knob switch 10 is in the shape of a circle, and the knob 141 is provided with respect to the upper cover 14 for the knob. When the sleeve is inserted into the sleeve, the knob U can be rotated freely in the circular hole 141 by 36 degrees, and the rotation of any obstruction limit (10) 13 is made. Thus, when the user switches the position, the interval between the scale numbers 142 is The distance is small. When the user dials the condensate 13, the user easily turns over and causes the internal circuit board circuit to be poorly connected. Therefore, the use of the switching segment is not very convenient. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a knob stop mechanism that quickly limits the effect of switching a segment within an angle range 3 201239934. Accordingly, the present invention provides a knob stop mechanism including a base unit I-circuit board unit, a rotary element and an upper cover unit, wherein the base unit has a base and a plurality of connections inside the base The circuit board unit has a circuit board mounted inside the base, and the bottom surface of the two-way board is in contact with the pin terminal to form an electrical connection; the knob unit has a shaft. In the base of the knob, the lower end of the knob 贞 the circuit board is scrapped and contacted, and the upper end is provided with an outer circumference of the n-axis. The side is provided at the side - the first engagement: the upper cover unit has a cover on the top of the base The upper cover has a circular hole for the protruding shaft to pass through, and the upper cover is provided with a second engaging portion on the inner peripheral wall of the circular hole to form a stop against the first engaging portion. The effect of the invention is that the knob is provided with the first engaging portion, so that the knob can form a stop with the second engaging portion of the upper cover when the knob is rotated, thereby preventing the knob from being over-turned, so that the knob can be within a limited range Quickly (four) switch the effect of the segment. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiment of the present invention. Referring to Figures 2 to 4, the rotary stop mechanism of the present invention in the preferred embodiment mainly includes a base, a G, a circuit board, a single m-coil unit 40, and an upper cover unit 50'. The constituent members and spatial combination types of the above units are detailed later. The base unit το 20 has a base 21 and a plurality of pin terminals 22 mounted inside the base 21. The base 21 is a rectangular hollow body 201239934. The inner bottom portion of the base pin 22 can be extended downward. Out. Internal circuit board 31 The circuit board 31 has a plurality of press plates 32 mounted on the base plate 21 and a cover on the circuit board 31 at the pre-slide 11 and the pin-end circuit board unit 3G. Contacts 311, the contacts 22 are in contact to form an electrical connection. :: Elastic positioning on the top... Rotary... Two = Chuan's convex axis is provided with an indicating arrow 412 at the top end surface, and the convex axis 4 ιι: ^ is provided at one side - the engaging portion 413, in this embodiment, The first = joint portion 413 is a flange structure having a disc at the lower end of the knob. The bottom end surface of the disc "4" is in contact with the pressure plate 32. The knob 41 is rotated to make the circuit board and the pin terminal 22 predetermined. The circuit forms an electrical connection. This type of control is known in the art. 'There is no more detail here. The circle # 414 is recessed near the outer circumference of the convex axis. The groove portion 415 is available for the ring. 42 sets into the assembly, the circle & 414 outer peripheral ring array is provided with a plurality of concave portions, the positioning piece 43 is slightly rounded, and the two sides are bent at each side to be provided with: a convex 431, the convex portion 431 is just right The snap-in position is formed in the recess 416 of the snap-in knob 4, whereby the knob 41 can be moved in a stepwise manner. The upper cover unit 50 has an upper cover 5 which is disposed at the top surface of the base 21 and is provided at the outer periphery of the upper cover 51. There are a plurality of wall portions 511, which can fit around the inner wall of the base 21, and a convex shaft 4n is opened at the center of the top surface of the upper cover 51. a circular hole 512, the upper cover 51 is provided with a second engaging portion 513 which can form a stop against the first engaging portion 413 at the side of the inner wall of the circular hole 512. 201239934 In this embodiment, the second card The stile portion 513 I has a scalloped groove structure of a predetermined angular range. The first engaging portion 413 can be freely moved in the space of the second engaging portion 513. Of course, the first and second engaging portions 413 can also be used. The shape and structure of the 513 are interchanged, and the positioning effect can be achieved. The upper cover 51 is provided with a plurality of scale numbers 514 corresponding to the periphery of the knob 41, and the indication arrow 412 of the knob 41 can be referred to the scale number 514, thereby reaching the indication of displaying the current position. The effect is the outline of the shape of each member of the knob stop mechanism of the present invention. Next, the switching action of the present invention and the expected effect can be stated as follows: > Figure 5, Figure 6, g user To perform the action of switching the segment position of the present invention, the knob 41 can be rotated to a predetermined position by turning the indicator arrow 412 on the knob 41 by the hand. When the user rotates the knob 41 too hard, the knob 41 First card The portion 413 is blocked by the second engaging portion 513 of the upper cover 51 to form a limit, so that the knob 41 does not rotate beyond the range of the rotatable angle, so that the knob 41 can be quickly made between the positions of the 〇~4 It is important to use, if it is required to increase the segment position of 〇~6, or reduce the segment position to 0~3, it is only necessary to replace the upper cover 51 with the corresponding second engaging portion 513, instead of It is necessary to change the structure of the knob unit 4〇; that is, it is only necessary to prepare the upper cover 51' with a simple structure, and it is not necessary to prepare the knob unit 40 with complicated structure, which has the advantages of high practicability and low manufacturing cost. In summary, the knob stopping mechanism of the present invention is mainly for solving the problem of the use of the conventional knob switch 10. The technical means adopted is to use the -the first engaging portion 413 at the outer circumference of the knob 201239934 41, and the upper cover 5i a second engaging portion 513 is disposed at an inner wall of one side of the hole 5i2. In the case where the knob 41 is normally switched, the first engaging portion 413 can move freely within the angular range of the second engaging portion 5i3. When the user rotates the knob 41 over the head, the first engaging portion 413 will abut against the inner wall of the second engaging portion 513 to form a stop limit, so that the knob 4 will not be over-switched, and the knob 41 is The segments can be quickly switched between each segment, which has a fast and convenient use effect. However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the present invention and the description of the invention. All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional rotary switch; FIG. 2 is an exploded perspective view of a preferred embodiment of the knob stop mechanism of the present invention. The present invention includes a base unit, a circuit board unit, and a knob. FIG. 3 is a perspective view of the preferred embodiment of the present invention; FIG. 4 is a front view of the preferred embodiment, showing a first engaging portion at the outer periphery of the knob unit, and the upper cover unit is provided with a first The second engaging portion of the engaging portion stops the limit; FIG. 5 is an operation diagram of the above preferred embodiment, illustrating the knob to the first. FIG. 6 is an action diagram of the above preferred embodiment, illustrating the case where the knob unit is turned to the fourth segment q 201239934 [Description of main component symbols] 20····. ... •...disc 21 •...base 415...··groove 22·.··· •...pin terminal 416... •...recess 30·..····circuit board unit 42... •...0-ring 31····. •...Circuit board 43... •...elastic positioning piece 311...··.. contact 431 ····· convex part 32*···....·pressure plate 50... •... top cover Unit 40 •... Knob unit 51... •...Upper cover 41···..•...Rotary 511... •...Wall 411... ----Convex shaft 512 ... •... Round hole 412... •... Arrow 513... •...Second engagement portion 413... - first engagement portion 514... •...scale number